Improvement in gas-meters



UNITED STATES PATENT OFFICE J. E. FISK, OF SALEM, MASSACHUSETTS.

IMPROVEMENT' IN GAS-METERS.

Specification forming part of Letters Patent No. l l ,663, dated October5, 1.*958.

To @ZZ whom) it may ccncern.-

Be it known that LJosEPH E. FIsK,ofSalem, in the county of Essex andState of Massachusetts, have invented an Improved Machine or Meter forMeasuring Gas; and I do hereby deelare that the same is fully describedandrepresented in the following specification and the accompanyingdrawings, of which- Figure 1`represents a vertical section ,of the saidmeter, showing most of its parts in their peculiar arrangement. Fig. 2isa view of the oor of the upper chamber or reservoir, A. and shows thevalve-seat with the position of the tubes con neeting the chambers andsacks with the valve of the meter. Fig. 3 represents'the lower face ofthe valve. Fig. 4 its upper face, and Fig. 5 a vertical section of thesaid valve. Fig. 6 is a view of an expanding case with its sack,guide-wire, &e.

In the said drawings, A denotes the upper gas chamber or' reservoir; B,t'hervalve-seat, and a b c d the tubes or passages connecting thevalve-seat with the working parts of the meter. On the valve-seat Brests y the valve C, secured by the square socket s to the crankshaftl),which passes down through the valveseat and into the chamber E, andthrough the partition K, and into the chamber H,.it being connected withthe cranks e and f, and the operative parts as will be hereinafterdescribed.

Into the orifice G, in the upper face of the valve,is inserted thesupply-pipe F, which may be taken out of the meter by means of themovable nut 71, to which it is fastened, such being for the purpose ofremoving and cleaning the valve. On the upper part of the said" valve isa screw or worm, i, which operates the pinion jot the register-trainofrgears G, which should be properly adjusted to record the number ofcubic feet of gas passing through the meter.

E and H are the lower chambers of the meter, in which operate theflexible sacks I and J of the flexible eases M N.

K K represents the partition between the chambers, it being formed withtwo bends or niches, as shownl in Fig. 1. On the horizontal part of thepartition at L is a box, through which the crank-shaft should workair-tight.

c andfare the cranks,which are set at right angles with each other.

k and lare connectingrods connecting the cranks with the flexible casesM aud'N.v These cases (see Fig. 6) are each made of tin or metal plateshinged together at their edges, as denoted by the letter m in. thedrawings. They may be provided with the guide'wires O O, to regulate theform of the sacks and cause them to expand equally, while the cranksprevent their expansion beyond a given point, the same serving to secureuniformity. in the amount of gas measured at each revolution. Theguidewires O O depend from the sides of the chambers as at u, and are,carried across the faces of diaphragms at o o, where they ar'e held inplace by the startspp. The pipe P connects the reservoir A with theburners.

With this combination of the several p'arts ofthe meter when the valve Cis adjusted, as shown in Fig. l, the gas ony being let into the pipe Fwill tlow in the direction of t-he arrows Iaiddown in the drawings.Undersuch circumstances the orifice marked q in the valve opens into thepassages a and b of the valveseat. 'The gas flows through the tubea intothe sack I and through the passage b into the lchamber E. The pressurein thesack Iand the cham ber E expels the gas from the chamber H throughthe tube @,and from the sack Jthrough the tube d, and the orifice 1" inthe valve into the reservoir lA. As the sack I distends and the sack Jis compressed, a corresponding movement regulated by th`e guide-wires ismade in the cases M N and the connections k Z, which revolve the cranks,the same causing the valve C to be revolved upon the valveseat. (SeeFigs. 2 and 4.) This revolution of the valve cuts ofthe gas first fromthe sack I,

which is now full, letting-it on the chamber H, then from'the chamber E,letting it on the sack J, which is now empty, whilelthe oriee r in thevalve allows the pressure of the gas in the sack .I and chamber H toexpel the gas from the sack I and the chamber E, thus reversing theconditions indicated in Fig. No. 1. As the sack J distends and the sackI is compressed, the valve is still further revolved un til theconditions of Fig. larereproduced. The valve revolves vsteadily in onedirection, always connecting a sack or` chamber at eachquarterrevolution, as it cuts ofi' the one bcfore; hence, the connectionwith the supplythe sacks'in case either may lbecome leaky or injured.4 Iam not obliged to' reject the 'solid parts, as is the case when bellowssacks are used. Furthermore, the arrangement and application ot the tubeF and the valve C and 'the case of themeter enable me to easily gainiecessto .the valve whenever it may be necessary to clean it.

I do not elaimthe employment of two Hext ble bellows/in two separatechambers. n Nor do I= claim themode of constructing the fiexible bellowsas exhibited in the United States ,Patent-'No 9,591, wherein eachbellows isv made of two metallicshallow dishes or partitions joined attheir kedges vbyla flexible connection, This diiers' essentially from myin- .vention whereinasack, I or J, separate from .and arranged within aflexible inclosing-case, M or N, is employed as in my invention, the

sack alone constitutes thegas-receiving charnfber, and can be readilyremoved from its llexible casewhenever necessarywithont requiring theinclosingcase to'be removed from the met-er. What I do.l claim is- 1.The above-described improved arrangemen'tof the partition K and theshaft D, the

eranks,lvalve C, and valve-seat B,-with respect 'to the chambers .orpassages a b e d, the same enabling one E, H, and A, and the pipesshaftDonly necessary to theoperationof the valve by Lthe two sacks I andJv.

2. Combining with each flexible sack I J a flexible incl-osing-case, Mor N, arranged so as to operate therewith, as specified.

3. The arrangement and application of the .pipe F withv respect to thevalve C, and the case of the meter, the same being in manner and for thepurpose as specitied. In testimony I have hereunto set my signature. y u

JOSEPH E. FISE` 'Witnessesz A w THos. H. JOHNSON, AUG. STORY.

